C. CAPPARUCCI ET AL.
Open Access AJAC
770
0,82%, st 0,13%). In the investigated pressure range,
solubility of CO2 in liquid phase and solubility of oil in
the supercritical phase were determined. Furthermore, the
composition of the gas and the liquid phase were deter-
mined, in terms of three main classes of components. A
thermodynamic model based on PREOS, including van
der Waals mixing rules corrected by two temperature-
independent binary interaction parameters, was used in
order to predict equilibrium data for the system CO2-
orange oil. The comparison is satisfactory because the
model is capable of providing a good representation both
of the experimental solubility data and the phases’ com-
positions. The selected model is predictive with respect
to the multicomponent system, being the regression para-
meters calculated only on data of selected binary sub-
systems.
6. Acknowledgements
The authors thank the student Gabriele Cintia Lattanzi
who performed some experimental runs during his bachelor
thesis.
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